Greg in Phoenix demonstrates some astonishing derring-do in this combination of shirt, tie, coat and pocket square. It’s busy, but it works remarkably well.
Note that each pattern varies in scale from those next to it. The busy (but beautiful!) coat is grounded by the simple, bold stripe of the shirt. The contrasts with the shirt in both pattern and texture with small white dots on a burgundy ground. The ivory pocket square matches nothing in the rest of the outfit, but it’s a comfortable neutral between the earth-toned neutrals of the jacket and the white neutrals of the shirt and tie.
This is a lot of moving parts. AP-level stuff. I don’t recommend this for the beginner or the faint of heart. I’m not even sure it looks better than would something a little simpler. Greg looks absolutely wonderful, though, doesn’t he?